/Engine/Source/Runtime/UMG/Public/Animation/MovieSceneWidgetMaterialSystem.h
class UMovieSceneWidgetMaterialSystem : public [UMovieSceneEntitySystem](API\Runtime\MovieScene\EntitySystem\UMovieSceneEntitySystem), public [IMovieScenePreAnimatedStateSystemInterface](API\Runtime\MovieScene\EntitySystem\IMovieScenePreAnimatedStateSyste-)